[HBASE-6873] Clean up Coprocessor loading failure handling

• Type: Sub-task
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.98.0
• Fix Version/s: 0.98.0, 0.99.0
• Component/s: Coprocessors, regionserver
• Hadoop Flags: Incompatible change, Reviewed

Release Note

The default setting of the configuration parameter 'hbase.coprocessor.abortonerror' has been changed from "false" to "true". This will cause HBase processes to abort if a coprocessor cannot be loaded, fails to initialize, or throws an unexpected exception. If "false", this instead will allow the server to continue execution in such cases but the system wide state of the coprocessor in question will become inconsistent as it will be properly executing in only a subset of servers, so this is most useful for debugging a new coprocessor deployment on a test cluster. Running a secure production cluster with this setting set to "false" is not advised.

• Assignee: Andrew Kyle Purtell
• Reporter: David Arthur
• Created: 24/Sep/12 21:49
• Updated: 31/May/16 08:28
• Resolved: 16/Jan/14 22:29

Description

When registering a coprocessor with a missing dependency, the regionserver gets stuck in an infinite fail loop. Restarting the regionserver and/or master has no affect.

E.g.,

Load coprocessor from my-coproc.jar, that uses an external dependency (kafka) that is not included with HBase.

12/09/24 13:13:15 INFO handler.OpenRegionHandler: Opening of region {NAME => 'documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.', STARTKEY => '', ENDKEY => '', ENCODED => 6d1e1b7bb93486f096173bd401e8ef6b,} failed, marking as FAILED_OPEN in ZK
12/09/24 13:13:15 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Attempting to transition node 6d1e1b7bb93486f096173bd401e8ef6b from RS_ZK_REGION_OPENING to RS_ZK_REGION_FAILED_OPEN
12/09/24 13:13:15 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Successfully transitioned node 6d1e1b7bb93486f096173bd401e8ef6b from RS_ZK_REGION_OPENING to RS_ZK_REGION_FAILED_OPEN
12/09/24 13:13:15 INFO regionserver.HRegionServer: Received request to open region: documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.
12/09/24 13:13:15 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Attempting to transition node 6d1e1b7bb93486f096173bd401e8ef6b from M_ZK_REGION_OFFLINE to RS_ZK_REGION_OPENING
12/09/24 13:13:15 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Successfully transitioned node 6d1e1b7bb93486f096173bd401e8ef6b from M_ZK_REGION_OFFLINE to RS_ZK_REGION_OPENING
12/09/24 13:13:15 DEBUG regionserver.HRegion: Opening region: {NAME => 'documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.', STARTKEY => '', ENDKEY => '', ENCODED => 6d1e1b7bb93486f096173bd401e8ef6b,}
12/09/24 13:13:15 INFO regionserver.HRegion: Setting up tabledescriptor config now ...
12/09/24 13:13:15 INFO coprocessor.CoprocessorHost: Class com.mycompany.hbase.documents.DocumentObserverCoprocessor needs to be loaded from a file - file:/path/to/my-coproc.jar.
12/09/24 13:13:16 ERROR handler.OpenRegionHandler: Failed open of region=documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b., starting to roll back the global memstore size.
java.lang.IllegalStateException: Could not instantiate a region instance.
	at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3595)
	at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3733)
	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:332)
	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108)
	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:169)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3592)
	... 7 more
Caused by: java.lang.NoClassDefFoundError: kafka/common/NoBrokersForPartitionException
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
	at java.lang.Class.getConstructor0(Class.java:2699)
	at java.lang.Class.newInstance0(Class.java:326)
	at java.lang.Class.newInstance(Class.java:308)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.loadInstance(CoprocessorHost.java:254)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load(CoprocessorHost.java:227)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors(RegionCoprocessorHost.java:162)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>(RegionCoprocessorHost.java:126)
	at org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:417)
	... 11 more
Caused by: java.lang.ClassNotFoundException: kafka.common.NoBrokersForPartitionException
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	... 21 more
12/09/24 13:13:16 INFO handler.OpenRegionHandler: Opening of region {NAME => 'documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.', STARTKEY => '', ENDKEY => '', ENCODED => 6d1e1b7bb93486f096173bd401e8ef6b,} failed, marking as FAILED_OPEN in ZK
12/09/24 13:13:16 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Attempting to transition node 6d1e1b7bb93486f096173bd401e8ef6b from RS_ZK_REGION_OPENING to RS_ZK_REGION_FAILED_OPEN
12/09/24 13:13:16 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Successfully transitioned node 6d1e1b7bb93486f096173bd401e8ef6b from RS_ZK_REGION_OPENING to RS_ZK_REGION_FAILED_OPEN
12/09/24 13:13:16 INFO regionserver.HRegionServer: Received request to open region: documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.
12/09/24 13:13:16 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Attempting to transition node 6d1e1b7bb93486f096173bd401e8ef6b from M_ZK_REGION_OFFLINE to RS_ZK_REGION_OPENING
12/09/24 13:13:16 DEBUG zookeeper.ZKAssign: regionserver:60020-0x139f43af2a70043 Successfully transitioned node 6d1e1b7bb93486f096173bd401e8ef6b from M_ZK_REGION_OFFLINE to RS_ZK_REGION_OPENING
12/09/24 13:13:16 DEBUG regionserver.HRegion: Opening region: {NAME => 'documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b.', STARTKEY => '', ENDKEY => '', ENCODED => 6d1e1b7bb93486f096173bd401e8ef6b,}
12/09/24 13:13:16 INFO regionserver.HRegion: Setting up tabledescriptor config now ...
12/09/24 13:13:16 INFO coprocessor.CoprocessorHost: Class com.mycompany.hbase.documents.DocumentObserverCoprocessor needs to be loaded from a file - file:/path/to/my-coproc.jar.
12/09/24 13:13:17 ERROR handler.OpenRegionHandler: Failed open of region=documents,,1348505987177.6d1e1b7bb93486f096173bd401e8ef6b., starting to roll back the global memstore size.
java.lang.IllegalStateException: Could not instantiate a region instance.
	at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3595)
	at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3733)
	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:332)
	at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108)
	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:169)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.GeneratedConstructorAccessor15.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3592)
	... 7 more
Caused by: java.lang.NoClassDefFoundError: kafka/common/NoBrokersForPartitionException
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
	at java.lang.Class.getConstructor0(Class.java:2699)
	at java.lang.Class.newInstance0(Class.java:326)
	at java.lang.Class.newInstance(Class.java:308)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.loadInstance(CoprocessorHost.java:254)
	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.load(CoprocessorHost.java:227)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors(RegionCoprocessorHost.java:162)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>(RegionCoprocessorHost.java:126)
	at org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:417)
	... 11 more
Caused by: java.lang.ClassNotFoundException: kafka.common.NoBrokersForPartitionException
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
	... 21 more

Ad infinitum.

It seems that upon failing to open a region after adding a coprocessor, that coprocessor should be unregister or at least disabled/blacklisted.

Issue Links

• relates to: HBASE-6222 Add per-KeyValue Security